import rospy

class Ros(object):
    def __init__(self):
        super(Ros, self).__init__()
        self.calibrationInfoUrl = ''
    def ros_init(self):
        rospy.init_node('camera_calibrate')
        calibrationInfoUrl = rospy.get_param("camera_calibrate/camera_intrinsic_calibration_url", self.calibrationInfoUrl)
        return calibrationInfoUrl
